ON GREENHOUSE PLANTS. 



and are seen to the greatest advantage when grown as such. 

 Those known as CamelHa-flowered, having large double flowers, 

 should be grown ; they can easily be raised from seed sown in 

 March, pricking out and potting on as required, giving frequent 

 shifts so as not to allow them to become pot-bound, and finally 

 flowering in Sin. pots. It is well to increase the richness of the 

 soil at each shift. Successions may be obtained by making 

 several sowings up to May, and thus plants may be had in 

 blossom well into the autumn. Grow in a cool pit or frame. 

 Height from i^ft. to 2ft. 



Calceolarias. — Many people find considerable difficulty in 

 growing herbaceous Calceolarias successfully, and they certainly 

 require careful treatment. Raise from seed sown (which is 

 extremely fine and requires care in handling) in May or June. 

 Sow on the surface of the soil, covering with sheets of glass. 

 When the second leaf has ap- 

 peared prick off", pot on singly 

 when ready, and continue to 

 shift as the plants grow, never 

 allowing them to become the 

 least pot-bound. Use a very 

 light compost of loam, leaf-soil, 

 and sand, adding dry cow-dung 

 as they get big, Keep very 

 cool and shady, having plenty of 

 moisture about, but not on the 

 leaves, with ventilation, excepting 

 when the wind is very cold. 

 Do not shift in winter. Grow in 

 the cool pit or frame, giving 

 only sufficient heat to keep out 

 frost, or during very damp 

 weather, continue to give as 

 much air as possible, and in 

 March shift into loin. pots for 

 flowering. Calceolarias are very 

 subject to the attacks of Green- 

 fly, which get under the leaves, 

 causing them to curl. As soon 

 as this appears fumigate slightly 

 two or three times a week, or 

 else dust with tobacco-powder, 

 using a puff distributor, which 

 enables the under-sides of the 

 leaves to be reached easily. The 



plants do not stand tobacco smoke well, so that this, if used at 

 all, must only be very sUght. The great diversity of colour, and 

 the varied markings of the blossoms, are very beautiful. Height 2 ft. 



Fig. 456. — Campanula persici- 

 folia and c. p. grandiflora 



ALBA. 



